Femtosecond laser writing of 3D polarization insensitive integrated devices for astrophotonics (Conference Presentation)

Simone Piacentini; Giacomo Corrielli; Abani Shankar Nayak; Tarun Kumar Sharma; Kalaga V. Madhav; Andrea Adami; Ettore Pedretti; Stefano Minardi; Lucas Labadie; Roberto Osellame

doi:10.1117/12.2544978

9 March 2020 Femtosecond laser writing of 3D polarization insensitive integrated devices for astrophotonics (Conference Presentation)

Simone Piacentini, Giacomo Corrielli, Abani Shankar Nayak, Tarun Kumar Sharma, Kalaga V. Madhav, Andrea Adami, Ettore Pedretti, Stefano Minardi, Lucas Labadie, Roberto Osellame

Author Affiliations +

Proceedings Volume 11270, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XX; 112700S (2020) https://doi.org/10.1117/12.2544978
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

Astrophotonics is an emerging tool for increasing the angular resolution in ground-based sky observations. Due to the unpolarized nature of celestial light, it is necessary to operate with fully polarization insensitive integrated devices. In this respect, here we show that a thermal annealing after the femtosecond laser writing of waveguides reduces their birefringence of more than order of magnitude, providing integrated circuits whose behaviour is insensitive to the polarization of the input light. As a validation of this technique, we present the successful fabrication of a low-loss integrated device for performing stellar interferometry of up to 8 input beams.

Conference Presentation

Citation Download Citation

Simone Piacentini, Giacomo Corrielli, Abani Shankar Nayak, Tarun Kumar Sharma, Kalaga V. Madhav, Andrea Adami, Ettore Pedretti, Stefano Minardi, Lucas Labadie, and Roberto Osellame "Femtosecond laser writing of 3D polarization insensitive integrated devices for astrophotonics (Conference Presentation)", Proc. SPIE 11270, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XX, 112700S (9 March 2020); https://doi.org/10.1117/12.2544978

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available